battery operated smoke and carbon monoxide detector

Wanlin Fire Equipment by Wanlin - China's leading source manufacturer of BS 5839 compliant combination smoke and CO alarm. Photoelectric smoke sensor + electrochemical CO sensor, 10-year sealed battery, voice alert, smart app options, OEM/ODM. ISO 9001. CE FCC RoHS UL EN14604 certified. Contact +8613261677119.